An assembly for connecting a first rebar segment and a second rebar segment. The assembly includes a first wedge and second wedge, each defining a hollow for receiving the first and second rebar segments, respectively. A first barrel and a second barrel each define a passage for receiving the first and second wedges, respectively. The passages are tapered for mating engagement with the wedges for driving the wedges radially inwardly in response to the wedges being in the passages and axially engaged by the barrels to tighten the wedges about the rebar segments. A cap defines an opening, a stopping surface, and a channel that extends axially between the opening and the stopping surface, receiving the first and second barrels in axial alignment with one another. A coupling connects the cap and one of the barrels, inhibiting axial movement of the barrels out of the channel of the cap.